I believe that the below Bible verses alone, if memorized by all Christians and applied to all aspects of life, could really make a change not only personally, but for all those around you.
It is taken from the Amplified Bible-
1 Corinthians 13:4-8
4) Love endures long and is patient and kind; love never is envious nor boils over with jealousy, is not boastful or vainglorious, does not display itself haughtily.
5) It is not conceited (arrogant and inflated with pride); it is not rude (unmannerly) and does not act unbecomingly, Love (God's love in us) does not insist on its own rights or its own way, for it is not self-seeking; it is not touchy or fretful or resentful; it takes no account of the evil done to it (it pays no attention to a suffered wrong).
6) It does not rejoice at injustice and unrighteousness, but rejoices when right and truth prevail.
7) Love bears up under anything and everything that comes, is ever ready to believe the best of every person, its hopes are fadeless under all circumstances, and it endures everything (without weakening).
8) Love never fails...
** Lisa's note: Love Sacrifices SELF....Selfishness Sacrifices OTHERS
My Favorite song to date....."The Proof of Your Love" by For King & Country